The theater launched an investigation into its former leader last month after American actor Anthony Rapp alleged that Spacey had climbed on top of him on a bed when Rapp was 14 and Spacey 26.

The Old Vic said it received the claims of inappropriate behavior in recent weeks, although the alleged incidents were said to have taken place from 1995 to 2013. It said many of the alleged incidents took place at the theater — located in the borough of Lambeth — and involved members of staff.

Only one of the alleged victims reported the incidents at the time. The Old Vic said a "cult of personality" around Spacey had discouraged people from speaking out.

In the past few weeks Spacey has been fired from the Netflix TV series "House of Cards," was dropped by his talent agency and publicist and is being cut out of Ridley Scott's finished film "All the Money in the World."

Spacey apologized to Rapp Oct. 30 for "deeply inappropriate drunken behavior" and later released a statement saying he was seeking unspecified treatment. He has not commented on the London allegations, and the Old Vic says he did not respond to a request to participate in its investigation.